Surface-mountable heat sink



FIG. 1 is a top view of the design for a surface-mountable heat sink;

FIG. 2 is a front elevational view thereof, the opposite rear view being the same;

FIG. 3 is a is a bottom view thereof;

FIG. 4 is a side elevational view thereof, the opposite side view being the same;

FIG. 5 is a front, top perspective view thereof; and,

FIG. 6 is a bottom perspective view thereof.

The broken-line disclosure in the views is understood to represent portions of the article in which the claimed design is embodied, but which form no part of the claimed design. 

CLAIM The ornamental design for a surface-mountable heat sink, as shown and described. 